Rembrandt created his etchings in the 1600's, but by the 1800's the plates for the etchings were worn and in poor condition.   Amand Durand, a well respected engraver, dedicated the major part of his life re-creating Rembrandt's 347 etchings in exacting detail.  Amand-Durand used as his guide, not the worn and flat plates, but the first and second state etchings of the master's original works.  Durand's original etchings were so well respected they were purchased by major collectors throughout Europe, and as well as the Louvre Museum in Paris and the French Biblioteque Nationale.  Endorsed with the publishers embossed "chop".